When comparing Alien Swarm vs Team Fortress 2: Mann vs. Machine, the Slant community recommends Alien Swarm for most people. In the question“What are the best 4-player local multiplayer games on Steam?” Alien Swarm is ranked 26th while Team Fortress 2: Mann vs. Machine is ranked 40th. The most important reason people chose Alien Swarm is:
The game consists of tried-and-true top-down shooter mechanics that will be familiar to most players; it is reminiscent of older arcade and console shooters.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to pick up and play, even for beginners
The game consists of tried-and-true top-down shooter mechanics that will be familiar to most players; it is reminiscent of older arcade and console shooters.
Pro Anyone can download and play the game as it is free-to-play and open-source
The game is completely free and has no microtransactions or ads.
The source code is also free and accessible, so the game can be easily modded.
Pro Easily play with up to 4-players in online co-op
Alien Swarm allows for up to 4-player online co-op, which makes for an easy way to play with a small group of friends or strangers.
Pro Convenient offline LAN support
Alien Swarm offers offline LAN (local area network) support, meaning that the game can be easily played locally with each machine connected together in the same place.
Pro The Mann vs. Machine co-op mode let’s players work together, a nice change of pace from the PvP modes
Mann vs. Machine is a co-op mode in Team Fortress 2 that places 6 players on a team with the objective of stopping robots from deploying a bomb. While not the central mode of the game, it allows for enjoyable cooperative play rather than competitive play.
Pro Free-to-play that does not require money to be at a competitive level
This game is mostly pay-to-gain, for example by unlocking new weapons, as opposed to pay-to-win. You can randomly earn or find things without having to purchase them, and some of those can be used to craft even more rare and powerful items.
Pro Free-to-play for everyone and anyone
Team Fortress 2 has been totally free-to-play since 2011. This means anyone can download and enjoy the title.
Pro Easily play with friends on different OSes
The game runs on Windows, macOS, and Linux machines, which makes it easy to enjoy the game with friends no matter what OS any of you use.
Pro Offline LAN support for those that do not wish to play online
You can play local multiplayer matches even without an internet connection as long as you follow the proper steps to set it up. This way people can set up LAN battles without worry of internet connections or ping times.
Pro Great humor breaks up the monotony of repeated gaming sessions
Valve is known for its sense of humor, and Team Fortress 2 does not disappoint. Unlike other popular first-person shooters, this is a game that does not take itself too seriously. This is great for those that may find the gameplay getting stale after repeated plays, as there is still something to enjoy.
Cons
Con Can get a bit repetitive
The gameplay doesn't change much from mission to mission; you’re generally just shooting aliens over and over again.
Con Gameplay is too short
The main story only takes about three or four hours to complete, which means you could beat the game in one sitting pretty easily.
Con Free accounts are slightly limited
Free accounts do not get the same rare and cosmetic items as paid accounts, nor do they have as many storage slots for items.